This thesis is a study of the use of humour and irony in Tv-commercials. It poses the questio: what techniques are used to make a 30-60 second Tv-commercial communicate something humorous? After analysing the Tv-commercials presented in the show Gullfisken, the conclusion of the thesisis that there are two main techniques in use: the first one involves the breaking of rules and genre conventions, and the second is hyperbole. Most often they appear together.